*Mount 'MS-DOS 7.iso'*
{Boot}
[Enter] x16
[Y]
[Enter] x3
[N]
[Enter] x5
[N]
[Enter] x20
[N]
[Enter] x3
[Right]
[Enter] x2
[Down]
[Space]
[Down] x3
[Space]
[Down]
[Space]
[C] x2
[Enter]
*Unmount CD*
[Y]